Press



Aug. 7, 1923. 1,463.896

c. KEHR PRESS Filed April 17. 1922 3 Sheets-Sheet 1 Aug. 7, 1923.

L463fi9 c. IKEHR PRESS Filed April 17. 1922 s Sheets-Sheet. 2

w E8 (J E E7 15 5 wuwvtoz Aug. 7, 1923.

C. KEHR PRESS Filed April 17-. 1922 3 Sheets-Sheet 5 Patented Aug. 7, 1923.

UtalTED STATES CYRUS KEHB, OF WASHINGTON, DISTRICT OF COLUMBIA.

PRESS.

Application filed April 17, 1922.

To all whom it may concern:

Be it known that l, CYRUS Kenn, a citizen of the United States, residing at lVashington, in the District of Columbia, have invented a new and useful Improvement in Presses, of which the following is a specification, reference being had to the accompanying drawing.

This invention relates particularly to presses containing a series or group of superposed horizontal plates or platens between which sheet-form material is to be placed for pressing, the plates or platens being at times separated to permit the insertion of material between them and being afterward forced toward each other to engage and press the material.

The object of this invention is to produce a machine embodying effective mechanism for controlling and moving the plates or platens.

In the accompanying drawings,

Fig. 1 is a front elevation of a machine embodying my improvement, parts being broken away;

Fig. 2 is an elevation of one of the ends of the same machine;

Fig. 8 is a plan of the same machine, parts being broken away;

Fig. 4: is a horizontal section on the line, l4, of Fig. 1;

Fig' 5 is a horizontal section on the line, 5-5, of Fig. 1.

Referring to said drawings, A, A are four upright corner posts or columns forming parts of the frame of the machine. These columns are of angle form, as shown in cross section in Figs. 4: and 5. At each end of the machine, the upper ends of the corner posts are connected by a horizontal beam, B, bolted to the corner posts; and at each end of the machine, the corner posts are similarly joined by a horizontal channel beam, B bolted to the corner posts near the lower ends of the latter. At the front and at the rear of the machine, the upper ends of the corner posts are joined by a horizontal angle beam, B having a horizontal flange resting on the upper ends of the corner posts while the other flange extends downward flatwise against the outer faces of the corner posts. Said beams are suitably bolted to the corner posts. At each side of the machine, near the lower ends of the corner posts. a horizontal channel. beam, B joins said corner posts, said. beam being Serial No. 553,756.

bolted to said posts. Parallel to and above the beams, B, angle beams, 13*, rest on and are secured to the upper side beams, B The members thus far described constitute the frame of th machine.

The plates or platens are horizontal and are of two kinds, active and idle. The active platens are directly engaged and raised and lowered by lifting mechanism. The idle platens are not engaged by the lifting mechanism, but they are engaged only by the active platens.

C, C are the idle platens. These alternate in position with the active platens, D, D.

The active platens are wide enough to make their front and rear edges meet the front and rear flanges of the corner posts, A. (See Fig. 5). Thus the platens are held against forward or backward movement. A bar, C extends across each end of each platen, C, and is secured thereto by bolts, C xtending through the bar into the platen. The end of each of said bars extends through an upright slot, A in the front and rear flanges of the corner posts. (Fig. 5). Normally said bars rest in the lower part of the slots, the platen being held at rest in this manner. Each slot extends above the bar, C far enough to allow the lifting of the platen through a short range. I

The bars, C can not move sidewise in the slots, A Hence said bars hold the platens, C, against endwise movement, while the front and rear flanges of the corner posts, A, hold said platens against forward or backward movement. I

The active platens, D, D are of the same width as the idle platens, C, C, and the platens, D, D, are long enough to extend against the end flanges of the corner posts, A, A. Thus the active platens are held against sidewise movement and also against endwise movement.

On each end of each platen, D, are two horizontal ears, D formed rigid on the platen. Said ears of the group of platens are staggered with reference to each other, so that no two of said ears are in the same upright line. See Fig. 2.

At each end of the machine is a horizontal transverse cam shaft, E, resting in bearings. E which are seated on the upper beams, B. On said shafts are excentricform cams, E One such cam is placed above each ear, D On. each cam is an excentric strap, E which extends downward other time bearing upon it one of the idle and has its lower end coupled to an upright slide rod, E which extends through a slide bearing, E in the adjacent cross beam, B. The lower end of each slide rod extends slidably through the ear, D which is in alignment with said cam and said rod. @n the lower end of each slide rod is a nut or similar retaining member, E, which bears against the adjacent ear, D which said slide rod is moved upward.

In the form shown in the drawings, the excentric-form cams, E which are connected by means of the slide rods to the same platen are set in radial positions different from the radial positions of other sets of cams, so that, during the rotation of the cam shafts, the active platens, D, will be engaged successively by the slide rods, E", for lifting said platens.

A shaft, extends horizontally from one shaft, E, to the other below the level of said shafts, and rests in bearings, F which rest on the upper longitudinal beams, B, which, as above stated. form a part of the frame of the machine. On each shaft, E, is a worm wheel, E which meshes with a worm, F fixed on the adjacent end of the shaft, F. A pulley, F is fixed on the shaft, F, to re c'eive a belt for driving said pulley and said shaft.

The operation is as follows:

As above stated, the four cams which are connected with any one active platen have a radial setting different from the radial setting of the cams of all other platens, in order that the active platens may be lifted at different times. As above stated, the slide rods, E extend slidably through the ears, D Said rods are long enough to allow the platens with which they are connected to rest upon the next lower idle platen when the longer radii of the associated cams are moving through the lower part of their paths. Furthermore, the difference between the major andminor axes of the cams is sufficient to cause the slide rods to move upward far enough to lift the associated active platen from the next lower idle platen and carry said active platen upward against the next higher idle platen and lift the latter from its seating in the slots, A of the corner posts. t is to be understood that the slots, A are to be so spaced and the cams and the slide rods are to be of such relative dimensions as to effect the above-described movements of the active platens-whereby an active platen first rests by its weight on the next lower idle platen and next moves upward and lifts the next higher idle platen, the weight of said idle platen being supported by said active platen, so that sheet-form material between the platens will at one time have bearing down upon it the active platen and have at anplatens.

When one of the active platens is separatel from one of the adjacent idle platens, shcetform material then located between said platens and having been sufficiently treated is to be removed and other sheetform material placed into said space.

By the division of the arrangement of the cams on the shafts, lit, E, whereby the long radii of the cams successively move into position above the shafts, the lifting of the platens during one rotation of the shafts is divided into as many intervals as there are active platens. In the drawings there are four sets of cams for the lifting and lowering of four active platens. If all the active platens were lifted simultaneously, the load to be lifted by the shafts during the upper range of travel. of the active platens would equal the weight of all the active platens plus the weight of the idle platens lifted by the active platens. By dividing the lifting of the active platens in the manner above described, the load to be lifted at one time is much reduced.

It is also to be observed that by thus dividing or distributing the positions of the cams on the shafts, D, whereby the active platens are lifted singly or serially, the separations between the platens for the removal or insertion of sheet-form material occur singly or serially and not all at one time. This facilitates the removal and replacing of the sheet-form material without stopping the operation of the machine.

In considering the operation, it must not be overlooked that during the'latter part of the downward stroke of the slide rods, the associated active platen rests upon the next lower idle platen and the slide rods slide through the ears of the associated active platen.

if it is desired. to have the plates warm or hot during operation, they may be made hollow or otherwise formed for conducting steam or hot water through them. The drawings show ports, J, J, on the ends of the. platens for the connection of tubing through which hot water or steam may be delivered into and exhausted from the platens in the manner already known in this art.

I claim as my invention,

1. In an apparatus of the kind described, the combination with a supporting frame, of a group of superposed horizontal platens, groups of upright reciprocatory rods engaged with said platens, and means for lifting the groups of rods of the different platens at different times, substantially as described.

2. In an apparatus of the kind described, the combination with a supporting frame, of a group of superposed horizontal platens, groups of upright reciprocatory rods engaged with said platens, and means for lifting the groups of said rods serially, substantially as described.

3. In an apparatus of the kind described, the combination With a supporting frame, of a group of superposed horizontal platens, horizontal shafts, cams on said shafts, and means in operative relation With the cams for lifting the platens of said group at different times, substantially as described.

4. In an apparatus of the kind described, the combination with a supporting frame, of a group of superposed horizontal platens, horizontal shafts, cams on said shafts, and means in operative relation with the cams for lifting the platens of said group serially, substantially as described.

5. in an apparatus of the kind described, the combination with a supporting frame, of a group of superposed horizontal platens seated in the frame, a second group of platens alternating With the platens of the first group, groups of upright reciprocatory rods engaged to said platens, and means for lifting the groups of rods of different platens at diflerent times, substantially as described.

6. In an apparatus of the kind described, the combination With a supporting frame, of a group of superposed horizontal platens seated in the frame, a second group of platens alternating with the platens of the first group, groups of upright reciprocatory rods engaged to said platens, and means for lifting the groups of rods of different platens serially, substantially as described.

7. In an apparatus of the kind described, the combination With a supporting frame, of a group of superposed horizontal platens seated in the frame, a second group of plat ens alternating With the platens of the first group, horizontal shafts, and cams on said shafts for lifting the platens of said group at different times, substantially as described.

8. in an apparatus of the kind described, the combination with asupporting frame, of a group of superposed horizontal platens seated in the frame, a second group of platens alternating Withthe platens of the first group, horizontal shafts, and cams on said shafts for lifting the platens of said group serially, substantially as described.

9. In an apparatus of the kind described, the combination With a supporting frame, of a group of superposed horizontal platens, a second group of platens alternating With the platens of the first group, horizontal shafts, and cams on said shafts for lifting the platens of the second group at different times, substantially as described.

10. in an apparatus of the kind described, the combination with a supporting frame,

of a group of superposed horizontal platens,

a second group of horizontal platens alternating With the platens of the first group,

and operating to engage said extensions singly for the single lifting of said platens, substantially as described.

12. in an apparatus of the kind described, the combination with a supporting frame, of a group of superposed platens having extensions on their edges. lifting means comprising horizontal shafts and reciprocatory rods in operative relation with said shafts and operating to engage said extensions serially for the serial lifting of said platens, substantially as described. 7

13. In an apparatus of the kind described, the combination With a supporting frame, of a group of superposed platens having extensions on their edges, lifting means com prising horizontal shafts and reciprocatory rods in operative relation with said shafts and slidable in said extensions and operating to engage said extensions singly for the single lifting of said platens, substantially described.

l l, In an apparatus of the kind described, the combination with a supporting frame, of a group of superposed platens having extensions on their edges, lifting niez.

described,

prising horizontal shafts and reciprocatory 15. in an apparatus of the kind described,

the combination With a supporting frame, of a group of superposed horizontal platens,

a second group of horizontal platens alternat-ing with the platens of the first group, and horizontal cam shafts in operative relation \Vlti: the platens of the second group for lifting said platens, substantially described.

16. In an apparatus of the kind described, the combination with a supporting frame. of a group of superposee horizontal platens, another group of horizontal platens alternating with the platens of the first group, and horizontal cam shafts in operative relation With the platens of the second ,roup for lifting said platens at different times, substantially as described,

17. In an apparatus of the kind described, the combination with a supporting frame,

' of group of superposed horizontal platens,

hating With the platens of the first group, and horizontal cam shafts in operative relation with the platens oat the second group for lifting said platens serially, substan- 5 tially as described.

18. In an apparatus of the kind described, the combination with a supporting frame, of a group of superposed horizontal platens having extensions at their edges, horizontal cam shafts, cams supported on said shafts 10 and set in different radial positions and in operativerelation With said extensions to adapt said cams to lift said platens at different times, substantially as described.

In testimony whereof I have signed my name, this 17th day of April, in the year one thousand nine hundred and twenty-two.

CYRUS KE'HR. 

